Why do the seats on airliners double as floating devices when they should double as parachutes?

My biggest wish is to be an airplane pilot, because at random points during the flight I would go on the intercom and just scream

Babies
So a little boy and his mommmy are on an airplane.
The little boy asks "Mommy, if mommys and daddys can make babies and mommy and daddy doggies can make puppies then how do mommy and daddy airplanes make babies?"
The mom says "I dont know but go ask the pilot"
The little boy goes to the pilot and ask him his question, and the pilot says
"Our Airplanes dont make babies because were Southwest Airlines and we pull out on time!"

Poland Crash
A two-seater Cessna 152 plane crashed into a cemetery early this afternoon in central Poland. Polish search and rescue workers have recovered 200 bodies so far and expect that number to climb as digging continues into the evening.

JFK
New York (CNN): At John F. Kennedy International Airport today, a Caucasian male (later discovered to be a high school mathematics teacher) was arrested trying to board a flight while in possession of a compass, a protractor, and a graphical calculator.
According law enforcement officials, he is believed to have ties to the Al-Gebra network. He will be charged with carrying weapons of math instruction.

Air Force One
Dick Cheney and George W Bush are flying on Air Force One.
George looks at Dick, chuckles and says, "You know, I could throw a $100.00 bill out the window right now and make one person very happy."
Dick shrugs his stiff shoulders and says, "Well, I could throw ten $10.00 bills out the window and make 10 people very happy."
Laura tosses her perfectly hair-sprayed hair and says, "I could throw one hundred $1.00 bills out the window and make a hundred people very happy."

Condoleezza Rice rolls her eyes, looks at all of them and says, "I could throw all three of you out the window and make the whole country happy."

Airport Security
A stats professor plans to travel to a conference by plane. When he passes the security check, they discover a bomb in his carry-on-baggage. Of course, he is hauled off immediately for interrogation. "I don't understand it!" the interrogating officer exclaims. "You're an accomplished professional, a caring family man, a pillar of your parish - and now you want to destroy that all by blowing up an airplane!" "Sorry", the professor interrupts him. "I had never intended to blow up the plane." "So, for what reason else did you try to bring a bomb on board?!" "Let me explain. Statistics shows that the probability of a bomb being on an airplane is 1/1000. That's quite high if you think about it - so high that I wouldn't have any peace of mind on a flight." "And what does this have to do with you bringing a bomb on board of a plane?" "You see, since the probability of one bomb being on my plane is 1/1000, the chance that there are two bombs is 1/1000000. If I already bring one, the chance of another bomb being around is actually 1/1000000, and I am much safer..."

Engine Trouble
An 747 was having engine trouble, and the pilot instructed the cabin crew to have the passengers take their seats and get prepared for an emergency landing.

A couple minutes later, the pilot asked the flight attendants if everyone was buckled in and ready.

"All set back here, Captain," came the reply, "except the lawyers are still going around passing out business cards."

Blondes on a Plane
A blonde gets to fly in an airplane for the first time. She has never been on an airplane anywhere and was very excited and tense. As soon as she boarded the plane, a Boeing 747, she started jumping in excitement, running over seat to seat and starts shouting, "BOEING! BOEING!! BOEING!!! BO....."

She sort of forgets where she is, even the pilot in the cock-pit hears the noise. Annoyed by the goings on, the Pilot comes out and shouts "Be silent!"

There was pin-drop silence everywhere and everybody is looking at the blonde and the angry Pilot. She stared at the pilot in silence for a moment, concentrated really hard, and all of a sudden started shouting, "OEING! OEING! OEING! OE...."

Flight Engineer
I was a Pan Am 552 Flight Engineer waiting for start clearance in Munich, Germany. I was listening to the radio since I was the junior crew member. This was the conversation I overheard (I don't recall call signs any longer):
Lufthansa: (In German) "Ground, what is our start clearance time?"
Ground: (In English) "If you want an answer you must speak English."
Lufthansa: (In English) "I am a German, flying a German airplane, in Germany. Why must I speak English?"
Beautiful English Accent: (before ground could answer) "Because you lost the bloody war!"

Blonde Stewardess
An airline captain was breaking in a new blonde stewardess. The route they were flying had a layover in another city.
Upon their arrival, the captain showed the stewardess the best place for airline personnel to eat, shop and stay overnight.
The next morning, as the pilot was preparing the crew for the day's route, he noticed the new stewardess was missing. He knew which room she was in at the hotel and called her up wondering what happened.
She answered the phone, crying, and said she couldn't get out of her room. "You can't get out of your room?"
The captain asked, "Why not?"
The stewardess replied: "There are only three doors in here," she sobbed, "one is the bathroom, one is the closet, and one has a sign on it that says 'Do Not Disturb'!"

Three Pilots
There was a Mexican, a American and a Japanese pilot.
They were taking turns flying over each of ther countries so they were flying over Kapan and the Japanese guy drops an apple on his country and the other two ask why he did that and he said "Because I love my country!"
So they went on to Mexico and the Mexican drops an orange on his country so the other two asked why he did that and he said "Because I love my country"
So they went on to America and the American drops a bomb on his country so the other two asked him why he did that and he said "Because I hate my country"
So they landed in their respective countries and the Japanese guy was walking and he saw a kid crying so he said whats the matter and the kid said an apple fell out of the sky and hit me in the head.
Then the Mexican was walking and he saw a kid crying so he asked what happened and the kid said an orange fell out of the sky and hit him in the head.
Then the American was walking and he saw a kid laughing and he ask what are you so happy about and he said "I farted and the building behind me exploded"